DOI: 10.1002/2013GL058422
论文题名: Correlated measurements of ozone and particulates in the Ross Island region, Antarctica
作者: Kalnajs L.E. ; Avallone L.M. ; Toohey D.W.
刊名: Geophysical Research Letters
ISSN: 0094-8307
EISSN: 1944-8038
出版年: 2013
卷: 40, 期: 23 起始页码: 6319
结束页码: 6323
语种: 英语
英文关键词: aerosols
; Antarctica
; chemistry
; ozone
Scopus关键词: Antarctica
; Halogen contents
; Increasing temperatures
; Particle enhancement
; Particle number density
; Sea salt aerosol
; Sub-micron particles
; Submicron aerosol
; Chemistry
; Chlorine compounds
; Ozone
; Ozone layer
; Sea ice
; Size distribution
; Snow
; Aerosols
; atmospheric chemistry
; correlation
; diameter
; measurement method
; ozone
; ozone depletion
; particle size
; particulate matter
; sea ice
; snowpack
; temperature effect
; trace gas
; Antarctica
; East Antarctica
; Ross Island
英文摘要: Trace gases, submicron particle size distributions, and bulk filterable halogen content were measured on Ross Island, Antarctica, in austral spring 2007. During several surface level, partial ozone depletion events, enhanced submicron particle concentrations, and changes in filterable halogens were observed. These events were characterized by ozone depletions of 5-15 ppbv for durations between 6 and 48 h and associated with threefold-to-fourfold increases in submicron particle mass (PM1.0) over backgrounds of approximately 100 ng m-3. Peak particle number densities were centered on a mode at 500-600 nm in diameter, which is consistent with wintertime sea-salt aerosol size distributions. Filterable chloride also increased during these events, consistent with aerosol being of oceanic origin. Ozone depletion and particle enhancement events were accompanied by increasing temperatures and winds, suggesting that halogen-containing aerosol is generated from windblown snow and brine from the snow pack or sea ice near the ice edge. Key Points There is a correlation between aerosols and ozone depletion This correlation is primarily in the submicron aerosol These aerosols appear to be of oceanic origin ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84889964810&doi=10.1002%2f2013GL058422&partnerID=40&md5=10e6dea97f12ec8c9b9159f23d551a20
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5571
Appears in Collections: 气候减缓与适应
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作者单位: Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, 1234 Innovation Dr., Boulder, CO 80303, United States
Recommended Citation:
Kalnajs L.E.,Avallone L.M.,Toohey D.W.. Correlated measurements of ozone and particulates in the Ross Island region, Antarctica[J]. Geophysical Research Letters,2013-01-01,40(23).